适用于***小抗拉强度690MPa高强度钢GTAW焊接的镀铜低合金铬镍钼(0,5%Cr,0,5%Ni,0,2%Mo)焊丝。该焊丝也适用于焊接低温条件下需要具有良好冲击强度的钢种。TypicalTensilePropertiesAr(I1)AWSAsweldedElongationTensileStrengthYieldStrengthStressRelievedTemperatureStressRelievedTestingTime16%713MPa636MPa--Ar(I1)ENAsweldedElongationTensileStrengthYieldStrengthStressRelievedTemperatureStressRelievedTestingTime21%817MPa720MPa--Ar(I1)ENStressrelievedElongationTensileStrengthYieldStrengthStressRelievedTemperatureStressRelievedTestingTime23%716MPa629MPa620°C2hr夏比V型缺口冲击性能Ar(I1)AWSAsweldedImpactValueTestingTemperatureStressRelievedTestingTempStressRelievedTestingTime123J-30°C--86J-40°C--Ar(I1)ENAsweldedImpactValueTestingTemperatureStressRelievedTestingTempStressRelievedTestingTime129J-30°C--120J-40°C--Ar(I1)ENStressrelievedImpactValueTestingTemperatureStressRelievedTestingTempStressRelievedTestingTime140J-30°C620°C2hr79J-40°C620°C2hr焊缝金属分析MnMnMoCSiNiCr1.38%-----MoMnMoCSiNiCr-0.19%----CMnMoCSiNiCr--0.118%---SiMnMoCSiNiCr---0.71%--NiMnMoCSiNiCr----0.52%-CrMnMoCSiNiCr-----0.57%)